Effect of Nitrogen Atmosphere on the Densification of a 3‐mol%‐Yttria‐Doped Zirconia
Effect of Nitrogen Atmosphere on the Densification of a 3‐mol%‐Yttria‐Doped Zirconia
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氮气气氛对 3mol% 氧化钇掺杂氧化锆致密化的影响
DOI：
10.1111/j.1151-2916.2002.tb00327.x
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发表时间：
2002
影响因子：
3.9
通讯作者：
Suk
中科院分区：
文献类型：
--
作者：
Y. Paek;Jung;Gyeungho Kim;Suk
研究了3-mol%-Y2 O3掺杂的ZrO 2（3 Y-ZrO 2）在N2和O2气氛下的致密化行为。粉末压块已在1550° C和1400°C下烧结不同时间。在1550°C烧结的试样在N2气氛中的密度高于在O2气氛中的密度，而在1400°C烧结的试样在N2气氛中的密度高于在O2气氛中的密度这种结果可以解释在氮的溶解度和氧空位的ZrO 2矩阵。由于随着热处理温度的升高，氮在ZrO 2中的溶解度增加，导致氧空位的形成，致密化速率提高。因此，本研究表明，氮的溶解度的ZrO 2和它的作用的致密化行为的3 Y-ZrO 2的证据。
The densification behavior of a 3-mol%-Y 2 O 3 -doped ZrO 2 (3Y-ZrO 2 ) has been investigated under N 2 and O 2 atmospheres. Powder compacts have been sintered at 1550° and 1400°C for various times. The density of the specimen sintered at 1550°C is higher in N 2 than in O 2 , while the contrary result is obtained in the case of the specimen sintered at 1400°C. Such results can be explained in terms of nitrogen solubility and oxygen vacancy in a ZrO 2 matrix. Because nitrogen solubility into the ZrO 2 increases with an increase in heat-treatment temperature, leading to the formation of oxygen vacancy, the densification rate becomes higher. The present study thus shows evidence of nitrogen solubility into the ZrO 2 and its role on the densification behavior of 3Y-ZrO 2 .